Jackdaw - 1980s winter atlas

The BTO winter atlas showed that Jackdaws were present in most 10km squares during the winters of 1981-82, 1982-82 and 1983-84.

The darker the colour, the higher the relative total count for each 10km square.  The darkest blue represents over 400 birds.

The map plot reflects winter flocking in the coastal plain and consequent large roosts.

Graham Rees